IMAGE  EVALUATION 
TEST  TARGET  (MT-S) 


1111.0    ^ 


I.I 


IM 

112 


M 

2.2 


11:25  i  1.4 


-    6" 


4 

1.6 


Photographic 

Sciences 
Corporation 


M 


23  WtST  MAIN  STREET 

WEBSTER,  NY.  14580 

(716)  8/2'4&03 


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CIHM/ICMH 

Microfiche 

Series. 


CIHIVl/ICIVIH 
Collection  de 
microfiches. 


Canadian  Institute  for  Historical  Microreproductions  /  Institut  Canadian  de  microreproductions  historiques 


Technical  and  Bibliographic  Notes/Notas  techniques  at  bibliopaphiques 


The  Institute  has  attempted  to  obtain  the  best 
original  copy  available  for  filming.  Features  of  this 
copy  which  may  be  bibliographically  unique, 
which  may  alter  any  of  the  images  in  tha 
reproduction,  or  which  may  significantly  change 
the  usual  method  of  filming,  are  checked  below. 


Coloured  covers/ 
Couverture  de  couleur 

Covers  damaged/ 
Couverture  endommag^e 


I      I    Covers  restored  and/or  laminated/ 


Ui       '    Cover  title  missing/ 
Letit 

I      I    Coloured  maps/ 


Couverture  restaurde  et/ou  peiliculde 

•iar  title  missing/ 

itre  de  couverture  manque 

sured  maps/ 
Cartes  g^ographiquds  en  couleur 

□    Coloured  ink  (i.e.  other  than  blue  or  black)/ 
Encre  de  couleur  (i.e.  autre  que  bleue  ou  no 

□    Coloured  plates  and/or  illustrations/ 
Planches  et/ou  illustrations  an  couleur 

□    Bound  with  other  material/ 
Reiii  avec  d'autres  documents 


noire) 


□    Tight  binding  may  cause  shpdows  or  distortion 
along  interior  margin/ 

La  re  liure  serree  peut  causer  de  I'ombre  ou  de  la 
distorsion  le  long  de  Ea  marg(  interieure 

□     Blank  leaves  added  during  restoration  may 
appear  within  the  text.  Whenever  possible,  these 
have  been  omitted  from  filming/ 
II  se  peut  que  certaines  pages  blanches  ajout^es 
lors  dune  restauration  apparaissent  dans  la  taxte, 
mais,  lorsque  cela  dtait  possible,  ces  pages  n'ont 
pas  iti  filmies. 


r~l\    Additional  comments:/ 


Commentaires  suppl^mentaires- 


[Printed  ephemera]  [2]  p. 


L'Institut  a  microfilme  le  meilleur  exemplaire 
qu'il  lui  a  eti  possible  de  se  procurer.  Les  details 
de  cet  exemplaire  qui  sont  peutdtre  uniques  du 
point  de  vue  btbliographique,  qui  peuvent  modifier 
une  image  reproduite,  ou  qui  peuvent  exiger  une 
modification  dans  la  m^thode  normale  de  filmage 
sont  indiqu^s  ci-dessous. 


n 


Coloured  pages/ 
Pages  de  couleur 

Pages  damaged/ 
Pages  endommagees 

Pages  restored  and/or  laminated/ 
Pages  restaurees  et/ou  pelliculees 


"~^    Pages  discoloured,  stained  or  foxed/ 


D 


Pages  d6colorees,  tachet6es  ou  piquees 

Pages  detached/ 
Pages  ddtachees 


I    /]    Showthrough/ 

lyj  T 


Transparence 


□    Quality  of  print  varies/ 
Quaiiti  in^gale  de  i'impression 

□    Includes  supplementary  material/ 
Comprend  du  materiel  supplementaire 

□    Only  edition  available/ 
Seule  Edition  disponible 


n 


Pages  wholly  or  partially  obscured  by  errata 
slips,  tissues,  etc.,  have  been  refilmed  to 
ensure  the  best  possible  image/ 
Les  pages  totalement  ou  partiellement 
obscurcies  par  un  feuillet  d'errata,  une  pelure, 
etc.,  ont  6t6  filmies  i  nouveau  de  facon  a 
obtenir  la  meilleure  image  possible. 


This  item  is  filmed  at  the  reduction  ratio  checked  below/ 
Ce  document  est  film6  au  taux  de  reduction  indiqud  ci-dessous. 
^°X 14X  18X  22X 


26X 


30X 


J 


12X 


16X 


20X 


24X 


28X 


n 

32X 


The  copy  filmed  here  has  bean  reproduced  thanks 
to  the  generosity  of: 

IJbrary  of  the  Public 
Archives  of  Canada 

The  images  appearing  here  are  the  best  quality 
possible  considering  the  condition  and  iegibiiity 
of  the  original  copy  and  in  keeping  with  the 
fiSming  contract  specifications. 


Original  copies  in  printed  paper  covers  are  filmed 
beginning  with  the  front  cover  and  ending  on 
the  last  page  with  a  printed  or  illustrated  impres- 
sion, or  the  back  cover  when  appropriate.  All 
other  original  copies  are  filmed  beginning  on  the 
first  page  with  a  printed  or  illustrated  impres- 
sion, and  ending  on  the  last  page  with  a  printed 
or  illustrated  impression. 


The  last  recorded  frame  on  each  microfiche 
shall  contain  the  symbol  ^«»>  (meaning  "CON- 
TINUED"), or  the  symbol  V  (meaning  "END"), 
whichever  applies. 

IV^aps,  plates,  charts,  etc.,  may  be  filmed  at 
different  reduction  ratios.  Those  too  largo  to  be 
entirely  included  in  one  exposure  are  filmed 
beginning  in  the  upper  left  hand  corner,  left  to 
right  and  top  to  bottom,  as  many  frames  as 
required.  The  following  diagrams  illustrate  the 
method: 


L'exemplaire  fitm6  fut  reproduit  grdce  d  la 
g6n6rosit6  de: 

La  bibiiothdque  des  Archives 
pubiiques  du  Canada 

Les  images  suivantes  ont  6t6  reproduites  avec  le 
plus  grand  soin,  compte  tenu  de  la  condition  et 
de  la  nettet6  de  l'exemplaire  filmd,  et  en 
conformltti  avec  les  conditions  du  contrat  de 
filmage. 

Les  exemplalres  originaux  dont  la  couverture  en 
papier  est  imprimde  sont  fiimds  en  commenpant 
par  le  premier  plat  et  en  terminant  soit  par  la 
dernlAro  page  qui  comporte  tne  empreinte 
d'Impression  ou  d'iilustration,  soit  par  le  second 
plat,  selon  ie  cas.  Tous  les  autres  exemplalres 
originaux  sont  filmds  en  commengant  par  la 
premldre  page  qui  comporte  une  empreinte 
d'Impression  ou  d'iilustration  et  en  terminant  par 
la  dernldre  page  qui  comporte  une  telle 
empreinte. 

Un  des  symboles  sulvants  apparaitra  sur  la 
dernldre  image  de  cheque  microfiche,  selon  le 
cas:  le  symbole  — ^  signifie  "A  SUIVRE  ",  le 
symbole  V  signifie  "FIN". 

Les  cartes,  pianches,  tableaux,  etc.,  peuvent  dtre 
filmds  d  des  taux  de  reduction  diffdrents. 
Lorsque  le  document  est  trop  grand  pour  dtre 
reproduit  en  un  seul  clichd,  il  est  film6  A  partir 
de  i'angle  sup6rieur  gauche,  de  gauche  d  droite, 
et  da  haut  en  bas,  en  prenant  le  nombre 
d'images  ndcessaire.  Les  diagrammes  suivants 
liiustrent  Ea  mdthode. 


1 

2 

3 

1 

2 

3 

4 

5 

6 

/''tatidani  SIzpA 

\    tixU  illcllt'S.     J 


^/?2t 


Office  of  Secretapjy,  256  Broadway,  N.  Y. 

R.  C.  Black  ALL,  PREsioENr. 
Angus  Sinclair,  SECRETAHy. 

New  York,  Decrmbeh  i6,  1895. 
DRIVING-BOX   WEDGES. 

I.— Have  you  ever  had  any  experience  with  locomotives 
whose  driving  boxes  were  not  put  up  with  adjustable  wedges  ? 
If  so,  please  give  us  the  results  of  your  observations. 

2.— Do  you  think  that  a  close  fitting  box  put  up  between  a 
shoe  and  a  fixed  wedge  (that  could  be  lined  only  by  a  machinist 
when  occasion  required),  would  be  a  better  method  of  construc- 
tion than  the  present  one  of  a  movable  wedge  ? 

3.— If  in  favor  of  the  stationary  wedge,  please  say  how  ought 
the  box  to  be  fitted  in  order  to  give  the  longest  mileage  without 
risk  of  the  box  sticking  when  the  engine  is  first  turned  out  ? 

4.— Will  you,  for  experimental  purposes,  equip  an  engine  with 
stationary  wedge,  and  run  it  some  four  or  five  months,  and  report 
results  to  u&  ? 

5.— Are  not  tiie  majority  of  hot  boxes  (not  hot  journals)  caused 
by  enginemen  setting  up  movable  wedges  too  tight  ? 

6.— Now  that  so  many  side  rods  have  bushed  ends,  and  are 
therefore  not  adjustable  as  to  length,  is  it  not  advisable  to  take  from 
enginemen  the  power  of  varying  the  distances  apart  of  the  axle 
centers,  as  can  now  be  done  on  an  engine  with  movable  wedges  ? 

7.— Do  not  stationary  wedges  break  off  fewer  axle  box  flanges 
than  movable  wedges  ? 

8.— If  stationary  wedge  were  not  used,  or  in  other  words,  if 
new  engines  had  the  frame  pedestals  forged  with  parallel  faces  and 
then  fitted  with  pedestal  blocks  paralleled  in  every  way,  so  that  the 
new  pedestal  blocks  as  they  came  from  the  milling  machine  could 


h'nrof  M ''''''"^'''^^'  "^'^^  '^^"^  «^  ^-^^'  "P  or  down,  would 

back  ^dlT  f'  ''"^V^^'^^'^''^-  -o"^'J  the  engine  tend  to  come 
with  we:.^^^^^^  f '  '''''''  "^^""^  "^^^•^  ^--^  -^'-^^  than  if  equipped 

ri.I  l''T^^'°'  ""^^"*  ''''■  "^'^^^''  '-""^I'tions,  would  engine  be  appre- 

Will  our  metnlKTs  oblige  the  Association,  and  this  Conm.ittee 

Barnett,  Stratford,  Ontario,  Canada. 

J.  DAVIS  BARNETT, 
H.  A.  GUILDS, 
T.  J.  HATSWELL, 
K.  ATKINSON, 
R.  E.  REDDING, 

Committee. 


